When I unlock it shows normally (0/0 text) and I can position correctly, the Test Mode also seems to work, because keep changing the bar constantly. But when I lock the position it doesn't show anymore, with full energy or not.

Many addons may conflict with SimplePowerBar. Ensure you have all addons that use the power bar or move it disabled for use.

When I unlock it shows normally (0/0 text) and I can position correctly, the Test Mode also seems to work, because keep changing the bar constantly. But when I lock the position it doesn't show anymore, with full energy or not.

I noticed on some boss fights the bar moves just slightly from its current position. I'm not sure why though. I have it lined up with a rage bar in another add on. So that's how I can tell its moved. The shifted position is not permanent, it moves back.

Sounds like you may have another addon that uses the AlternatePowerBar. This could be from a boss mod of yours or perhaps another power bar addon.

Could you show me a list of your addons? Perhaps I could pinpoint it a bit for you.

I noticed on some boss fights the bar moves just slightly from its current position. I'm not sure why though. I have it lined up with a rage bar in another add on. So that's how I can tell its moved. The shifted position is not permanent, it moves back.

Spoils of Pandaria 10th boss in Siege of Ogrimmar. It shows up counting but it sometimes gets stuck, like for example it wont go 5,10,15... will go 5, 35, 50 when the blizzard 1 is very progressive (which used to be displayed until i changed the boss frames, now i'm not sure on progress on each side, also it only shows 1 side if your familiar with this boss.

I hope this is clearer, i am useless at explaining things :-/

After watching a video of the encounter I can't see how often it ticks, or what would trigger an increase.

Normally the power events would trigger the proper update but since I'm assuming the power isn't the same throughout the encounter ( different quadrants etc ) there may be a different event I need to be watching for.

For now on the encounter, perhaps its best to use the '/spb blizz' command to toggle to the blizzard bar until I can get a chance to encounter the fight.

Spoils of Pandaria 10th boss in Siege of Ogrimmar. It shows up counting but it sometimes gets stuck, like for example it wont go 5,10,15... will go 5, 35, 50 when the blizzard 1 is very progressive (which used to be displayed until i changed the boss frames, now i'm not sure on progress on each side, also it only shows 1 side if your familiar with this boss.